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Technique for discriminating between coordinated and uncoordinated cardiac rhythms

  • US 20040073262A1
  • Filed: 05/09/2003
  • Published: 04/15/2004
  • Est. Priority Date: 11/02/2000
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • at least two electrodes disposed at different locations in or around a heart to sense cardiac complexes associated with the at least two cardiac signals;

    a signal sensing circuit, coupled to the at least two electrodes to receive and amplify the sensed cardiac complexes associated with at least two cardiac signals;

    a controller, coupled to the signal sensing circuit, where the controller receives the amplified cardiac complexes associated with the at least two cardiac signals, and where the controller comprises;

    an analyzer, to compute a set of interelectrode detection time differences using the sensed cardiac complexes associated with one of the at least two cardiac signals and the corresponding cardiac complexes associated with the other of the at least two cardiac signals for a predetermined time interval, where the analyzer further computes a detection time difference variability using the computed set of interelectrode detection time differences of sensed complexes; and

    a comparator, coupled to the analyzer, to compare the computed detection time difference variability with a predetermined detection time difference variability threshold value, and issue a command signal based on the outcome of the comparison.

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